Hemophilia is characterized by ____
a. defects in the mechanism of blood clotting
b. an extremely low blood iron level
c. jaundice of the eyes and skin
d. muscular weakness and atrophy
e. breathing difficulties
a
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Distinctly different groups within a species are known as
A. varieties. B. breeds. C. subspecies. D. All of these answers are true.
To test the effect of vitamin D on growth, two groups of rats were raised under identical conditions and fed the same diet. One of the groups received daily injections of vitamin D
The other group received injections of saline, which did not contain vitamin D. All the rats were weighed weekly for 2 months. In this experiment, the control was the A) average weight gain of the rats. B) 2-month period of time. C) group receiving vitamin D. D) group receiving saline.
The homeless in the United States are at increased risk of undernutrition. Which of the following is true about the homeless?
Select one: a. Most of them are alcoholics. b. Most of them are lazy. c. Many are members of families with children. d. All are poorly educated.
Somatic mutations are initiated in V gene segments by the creation of abasic sites. Why does the repair of these introduce more mutations than similar repairs at other sites?
What will be an ideal response?